When considering hormone-receptor interactions, the dissociation constant (Kd) refers to the hormone concentration at which __________ of the receptor binding sites are bound (i.e., occupied) by the hormone.

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Physiology Test Question

When considering hormone-receptor interactions, the dissociation constant (K_d) refers to the hormone concentration at which __________ of the receptor binding sites are bound (i.e., occupied) by the hormone.

	(A) 5%
	(B) 25%
	(C) 50%
	(D) 75%
	(E) 100%

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Posted: Monday, February 22, 2016